code: def __init__(self):
      super().__init__()
      self._specified = True
  
file_path: fastNLP/fastNLP/core/metrics/backend/oneflow_backend/backend.py
imports: from typing import List
  import numpy
  from fastNLP.core.metrics.backend import Backend
  from fastNLP.core.metrics.utils import AggregateMethodError
  from fastNLP.core.utils import is_in_oneflow_dist
  from fastNLP.envs.imports import _NEED_IMPORT_ONEFLOW
  from fastNLP.core.drivers.oneflow_driver.dist_utils import fastnlp_oneflow_all_gather
label_desc: Use image node_id 1 to create a new OneflowBackend object from inherited base classes: Backend with example: obj = OneflowBackend()